Document Detail

Mammary growth during lactation: implications for increasing milk yield.
MedLine Citation:
PMID:  3668055     Owner:  NLM     Status:  MEDLINE    
Milk yield is greatly influenced by the size of the mammary secretory cell population. In rats, proliferation of cells during early lactation may account for as much as three-quarters of the increase in daily milk yield between parturition and peak lactation; the remainder is due to increased activity of existing cells. Conversely, in goats, all the initial decline in milk yield after peak lactation can be attributed to loss of secretory cells. Increased frequency of milking enhances milk yield and reduces secretory cell loss, whereas goats hemimastectomized at peak lactation undergo compensatory changes in the remaining gland, which include a complete maintenance of cell number for at least 18 wk. Cell proliferation is increased in both cases, showing that mammary growth can occur during established lactation. The significance of this observation is discussed in relation to ways in which the milk yield of dairy animals might be increased.
C H Knight; C J Wilde
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of dairy science     Volume:  70     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1987 Sep 
Date Detail:
Created Date:  1987-12-08     Completed Date:  1987-12-08     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1991-2000     Citation Subset:  IM    
Hannah Research Institute, Ayr, Scotland.
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MeSH Terms
Lactation / physiology*
Mammary Glands, Animal / growth & development*

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